D1U Communications www.murata-ps.com D1U Communications Protocol Application Note Communication Protocol Support The D1U family of power supplies currently supports 3.3V-bus and 5V-bus standardmode (100kHz) I2C Serial Communication as outlined in Philips Semiconductors “The I2C Bus Specification Version 2.1” (January 2000). The available address lines currently allows for communication with up to 8 D1U power supplies on a single serial communication bus. Each D1U power supply contains a: The D1U family of power supplies can also support 3.3V-bus and 5V-bus SMBUS Serial Communication as outlined in the SBS Implementers forum “System Management Bus (SMBUS) Specification Version 2.0” (August 2000) 1. 2K serial EEPROM device used for FRU data storage (FRU data specs customer specific) D1U power supplies are configured to operate as slave-only devices. 2. System-On-Chip (SOC) -type controller used for D1U status, fault, and parametric data reporting and remote on/off control However, they can be re-configured to support single master operation and multimaster and slave operation. Serial Comm. Device Addressing The D1U family of power supplies supports 8-bit addressing (7-bit slave address & LSB read/write bit). The specified addressing is as follows: Address Byte 7 1 MSB 6 0 5 0 4 0 3 A2 2 A1 1 A0 0 R/W LSB Address lines A0 (LSB), A1, & A2 are internally connected to the standby bus (backplane) voltage through 7.5K pull-up resistors. The address lines are pin-strapped (grounded or left open) on the backplane connectors to determine the unique 7-bit slave address assigned to each D1U slot in the backplane. Serial Comm. Read/Write Registers On a host read request, the D1U power supplies transmits up to 6 8-bit registers that provide power supply status info, o/p fault indicators, and parametric data. The 6 data registers are ordered as follows: ■ ■ ■ ■ ■ ■ Byte 0: Byte 1: Byte 2: Byte 3: Byte 4: Byte 4: Status O/P Fault Main output voltage Main output current Fan 1 current Fan 2 current - Power supply operation status - Main output fault, standby output fault, & fan fail fault status - 8-bit scaled representation of Main output voltage - 8-bit scaled representation of Main output current - 8-bit scaled representation of Fan1 current - 8-bit scaled representation of Fan2 current On a host write request, the D1U power supply can receive a single byte command to enable/disable the main output through serial communication. The 1 command register is as follows: ■ Byte 0: On/Off - Main output on/off control For full details go to www.murata-ps.com/rohs www.murata-ps.com/support 15 Feb 2013 ACAN29.A05 Page 1 of 11 D1U Communications D1U Communications Protocol Application Note Status/Fault Registers Byte 0 - The D1U Status register function and definitions are as follows: 7 PS_ON MSB 6 P_GOOD BYTE 0 - Status Register 4 3 PS_BAD Fan Failure 5 AC_OK 2 OT Warning 1 OT Critical 0 AC RANGE LSB Bit Status Description Bit # Set Main Output Enabled Main Output Within Regulation AC Input Voltage OK PS Fault Detected Fan1/Fan1 Fault Detected PS Temperature Warning PS Shutdown Due To Overtemp AC Input High Range Detected 7 6 5 4 3 2 1 0 Clear Main 0utput Disabled Main Output Out Of Regulation AC Input Voltage Out Of Range Unit PS OK Fan1/Fan2 OK PS Within Normal Temp No Over Temp Shutdown AC Input Low Range Detected Byte 1 - The D1U O/P Fault register function and definitions are as follows: 7 12 OV MSB Bit # 7 6 5 4 3 2 1 0 6 12 UV 5 12V OC BYTE 0 - Status Register 4 3 STBY FAIL FAN1 OC 2 FAN2 OC 1 - 0 LSB Bit Status Description Set Main Output Overvoltage Fault Main Output Undervoltage Fault Main Output Overcurrent Fault Standby Output Fail Detect Fan 1 Stall/Overcurrent Detect Fan 2 Stall/Overcurrent Detect - Clear No OV Fault No UV Fault No OC Fault Standby Output OK Fan 1 OK Fan 2 OK - www.murata-ps.com/support 15 Feb 2013 ACAN29.A05 Page 2 of 11 D1U Communications D1U Communications Protocol Application Note Parametric Data Registers The D1U family currently supports 8-bit monitoring of the main output voltage, main output current, and both fan filtered currents. Note: Higher precision (10-bit or 12-bit) and accuracy monitoring of the same parameters can be supported with drop-in replacement on board SOCs with increased ADC capability but identical pin and function assignment. Byte 2 - 8-bit representation of the Main Output Voltage Model D1U-W-1600-12-HC2C D1U-W-1600-12-HA2C D1U-W-1200-12-HC2C D1U-W-1200-12-HA2C D1U-W-2000-48-HC2C D1U-W-2000-48-HA2C D1U-W-2000-48-HB2C D1U-W-1600-48-HC2C D1U-W-1600-48-HA2C D1U-W-1600-48-HB2C D1U-W-1200-48-HC2C D1U-W-1200-48-HA2C D1U-W-1200-48-HB2C Detection Range 0 Vdc to OVP 0 Vdc to OVP 0 Vdc to OVP 0 Vdc to OVP 0 Vdc to OVP 0 Vdc to OVP 0 Vdc to OVP 0 Vdc to OVP 0 Vdc to OVP 0 Vdc to OVP 0 Vdc to OVP 0 Vdc to OVP 0 Vdc to OVP Transfer Equation V12V = V12V (8-bit dec) x (0.0555 V/LSB) V12V = V12V (8-bit dec) x (0.0555 V/LSB) V12V = V12V (8-bit dec) x (0.0555 V/LSB) V12V = V12V (8-bit dec) x (0.0555 V/LSB) V48V = V48V (8-bit dec) x (0.2314 V/LSB) V48V = V48V (8-bit dec) x (0.2314 V/LSB) V48V = V48V (8-bit dec) x (0.2314 V/LSB) V48V = V48V (8-bit dec) x (0.2314 V/LSB) V48V = V48V (8-bit dec) x (0.2314 V/LSB) V48V = V48V (8-bit dec) x (0.2314 V/LSB) V48V = V48V (8-bit dec) x (0.2314 V/LSB) V48V = V48V (8-bit dec) x (0.2314 V/LSB) V48V = V48V (8-bit dec) x (0.2314 V/LSB) Accuracy ±3% inside O/P regulation limits (0º-50ºC) ±3% inside O/P regulation limits (0º-50ºC) ±3% inside O/P regulation limits (0º-50ºC) ±3% inside O/P regulation limits (0º-50ºC) ±3% inside O/P regulation limits (0º-50ºC) ±3% inside O/P regulation limits (0º-50ºC) ±3% inside O/P regulation limits (0º-50ºC) ±3% inside O/P regulation limits (0º-50ºC) ±3% inside O/P regulation limits (0º-50ºC) ±3% inside O/P regulation limits (0º-50ºC) ±3% inside O/P regulation limits (0º-50ºC) ±3% inside O/P regulation limits (0º-50ºC) ±3% inside O/P regulation limits (0º-50ºC) Transfer Equation I12V = I12V (8-bit dec) x (0.6285 V/LSB) I12V = I12V (8-bit dec) x (0.6285 V/LSB) I12V = I12V (8-bit dec) x (0.4706 V/LSB) I12V = I12V (8-bit dec) x (0.4706 V/LSB) I48V = I48V (8-bit dec) x (0.1959 V/LSB) I48V = I48V (8-bit dec) x (0.1959 V/LSB) I48V = I48V (8-bit dec) x (0.1959 V/LSB) I48V = I48V (8-bit dec) x (0.1647 V/LSB) I48V = I48V (8-bit dec) x (0.1647 V/LSB) I48V = I48V (8-bit dec) x (0.1647 V/LSB) I48V = I48V (8-bit dec) x (0.1216 V/LSB) I48V = I48V (8-bit dec) x (0.1216 V/LSB) I48V = I48V (8-bit dec) x (0.1216 V/LSB) Accuracy ±10% @ rated current (0º-50ºC) ±10% @ rated current (0º-50ºC) ±10% @ rated current (0º-50ºC) ±10% @ rated current (0º-50ºC) ±10% @ rated current (0º-50ºC) ±10% @ rated current (0º-50ºC) ±10% @ rated current (0º-50ºC) ±10% @ rated current (0º-50ºC) ±10% @ rated current (0º-50ºC) ±10% @ rated current (0º-50ºC) ±10% @ rated current (0º-50ºC) ±10% @ rated current (0º-50ºC) ±10% @ rated current (0º-50ºC) Transfer Equation IFAN = IFAN (8-bit dec) x (4.9 mA/ LSB) IFAN = IFAN (8-bit dec) x (7.4 mA/ LSB) IFAN = IFAN (8-bit dec) x (4.9 mA/ LSB) IFAN = IFAN (8-bit dec) x (7.4 mA/ LSB) IFAN = IFAN (8-bit dec) x (4.9 mA/ LSB) IFAN = IFAN (8-bit dec) x (7.4 mA/ LSB) IFAN = IFAN (8-bit dec) x (4.9 mA/ LSB) IFAN = IFAN (8-bit dec) x (4.9 mA/ LSB) IFAN = IFAN (8-bit dec) x (7.4 mA/ LSB) IFAN = IFAN (8-bit dec) x (4.9 mA/ LSB) IFAN = IFAN (8-bit dec) x (4.9 mA/ LSB) IFAN = IFAN (8-bit dec) x (7.4 mA/ LSB) IFAN = IFAN (8-bit dec) x (4.9 mA/ LSB) Accuracy ±10% @ full speed (0º-50ºC) ±10% @ full speed (0º-50ºC) ±10% @ full speed (0º-50ºC) ±10% @ full speed (0º-50ºC) ±10% @ full speed (0º-50ºC) ±10% @ full speed (0º-50ºC) ±10% @ full speed (0º-50ºC) ±10% @ full speed (0º-50ºC) ±10% @ full speed (0º-50ºC) ±10% @ full speed (0º-50ºC) ±10% @ full speed (0º-50ºC) ±10% @ full speed (0º-50ºC) ±10% @ full speed (0º-50ºC) Byte 3 - 8-bit representation of the Main Output Current Model D1U-W-1600-12-HC2C D1U-W-1600-12-HA2C D1U-W-1200-12-HC2C D1U-W-1200-12-HA2C D1U-W-2000-48-HC2C D1U-W-2000-48-HA2C D1U-W-2000-48-HB2C D1U-W-1600-48-HC2C D1U-W-1600-48-HA2C D1U-W-1600-48-HB2C D1U-W-1200-48-HC2C D1U-W-1200-48-HA2C D1U-W-1200-48-HB2C Detection Range 0 Adc to OVP 0 Adc to OVP 0 Adc to OVP 0 Adc to OVP 0 Adc to OVP 0 Adc to OVP 0 Adc to OVP 0 Adc to OVP 0 Adc to OVP 0 Adc to OVP 0 Adc to OVP 0 Adc to OVP 0 Adc to OVP Byte 4/5 - 8-bit representation of the Fan1/Fan2 Filtered Currents Model D1U-W-1600-12-HC2C D1U-W-1600-12-HA2C D1U-W-1200-12-HC2C D1U-W-1200-12-HA2C D1U-W-2000-48-HC2C D1U-W-2000-48-HA2C D1U-W-2000-48-HB2C D1U-W-1600-48-HC2C D1U-W-1600-48-HA2C D1U-W-1600-48-HB2C D1U-W-1200-48-HC2C D1U-W-1200-48-HA2C D1U-W-1200-48-HB2C Detection Range 0 mAdc to OCP 0 mAdc to OCP 0 mAdc to OCP 0 mAdc to OCP 0 mAdc to OCP 0 mAdc to OCP 0 mAdc to OCP 0 mAdc to OCP 0 mAdc to OCP 0 mAdc to OCP 0 mAdc to OCP 0 mAdc to OCP 0 mAdc to OCP www.murata-ps.com/support 15 Feb 2013 ACAN29.A05 Page 3 of 11 D1U Communications D1U Communications Protocol Application Note On/Off Control Register The D1U family currently supports a single write command byte to enable/disable the main 12V via serial communication as an alternate to external pin on/off toggling. Note: The serial On/Off command can only toggle the main output on and off only if the PS_ON external pin is not externally shorted to GND (i.e. external pin is left open and not shorted to ground to enable the unit). The On/Off command will not perform any function if the unit is already enabled via shorting the PS_ON external pin. 7 0 MSB 6 1 BYTE 0 - Status Register 4 3 1 0 5 0 2 1 1 0 0 On/Off LSB Bit Status Description Bit # Set Main Output Enabled 0 Clear Main 0utput Disabled FRU EEPROM Contents with Byte Descriptions Address Byte HEX Data [0000] Byte 0 1 Common Header Format Version Byte 1 1 Internal Use Area Byte 2 0 Byte 3 9 Byte 4 0 Byte 5 18 Byte 6 0 Byte 7 DD Common Header Checksum Byte 8 1 Internal Use Format Version Byte 9 0 NULL ICT Revision Byte 10 0 NULL ICT Revision Byte 11 0 NULL Test Pass Code Byte 12 0 NULL Test Pass Code Byte 13 0 NULL Test Pass Code Byte 14 0 NULL Test Location Byte 15 0 NULL Number of Tests Performed Byte 16 0 NULL Number Of Failures Detected Byte 17 0 NULL Number of NTF Detected Byte 18 0 NULL Functional Revision Byte 19 0 NULL Functional Revision Byte 20 0 NULL Functional Test Pass Code Byte 21 0 NULL Functional Test Pass Code Byte 22 0 NULL Functional Test Pass Code Byte 23 0 NULL Functional Test Location Byte 24 0 NULL Number of Tests Performed [0010] ASCII NULL Description Chassis Info Area Starting Board Area Starting Offset NULL Byte 73 Product Info Area Starting Offset Multi-Record Area Offset NULL Notes Byte 192 Pad with zero www.murata-ps.com/support 15 Feb 2013 ACAN29.A05 Page 4 of 11 D1U Communications D1U Communications Protocol Application Note Address [0020] [0030] Byte HEX Data ASCII Description Byte 25 0 NULL Number Of Failures Detected Byte 26 0 NULL Number of NTF Detected Byte 27 0 NULL LCD Revision Byte 28 0 NULL LCD Revision Byte 29 0 NULL LCD Test Pass Code Byte 30 0 NULL LCD Test Pass Code Byte 31 0 NULL LCD Test Pass Code Byte 32 0 NULL Functional Test Location Byte 33 0 NULL Number of Tests Performed Byte 34 0 NULL Number Of Failures Detected Byte 35 0 NULL Number of NTF Detected Byte 36 0 NULL CTO Revision Byte 37 0 NULL CTO Revision Byte 38 0 NULL Functional CTO Byte 39 0 NULL Functional CTO Byte 40 0 NULL Functional CTO Byte 41 0 NULL CTO. Test Location Byte 42 0 NULL Number of CTO Tests Performed Byte 43 0 NULL Number Of CTO Failures Detected Byte 44 0 NULL Number of CTO NTF Detected Byte 45 0 NULL Audit Test Revision Byte 46 0 NULL Audit Test Revision Byte 47 0 NULL Audit Test Pass Code Byte 48 0 NULL Audit Test Pass Code Byte 49 0 NULL Audit Test Pass Code Byte 50 0 NULL Audit. Test Location Byte 51 0 NULL Number of Audit Tests Performed Byte 52 0 NULL Number Of Audit Failures Detected Byte 53 0 NULL Number of Audit NTF Detected Byte 54 0 NULL Field Repair Revision Byte 55 0 NULL Field Repair Revision Byte 56 0 NULL Field Repair Test Pass Code Byte 57 0 NULL Field Repair Test Pass Code Byte 58 0 NULL Field Repair Test Pass Code Byte 59 0 NULL Field Repair Test Location Byte 60 0 NULL Number of Field Repair Tests Performed Byte 61 0 NULL Number Of Field Repair Failures Detected Byte 62 0 NULL Number of Field Repair NTF Detected Notes www.murata-ps.com/support 15 Feb 2013 ACAN29.A05 Page 5 of 11 D1U Communications D1U Communications Protocol Application Note Address [0040] [0050] [0060] Byte HEX Data ASCII Description Byte 63 0 NULL Reserved for future Use Byte 64 0 NULL Reserved for future Use Byte 65 0 NULL Reserved for future Use Byte 66 0 NULL Reserved for future Use Byte 67 0 NULL Reserved for future Use Byte 68 0 NULL Reserved for future Use Byte 69 0 NULL Reserved for future Use Byte 70 0 NULL Reserved for future Use Byte 71 0 NULL Reserved for future Use Byte 72 1 Board Area Format Version Byte 73 0F Board Area Length Byte 74 0 Byte 75 20 Manufacturing Date And Time (Hex) Byte 76 20 Manufacturing Date And Time (Hex) Byte 77 20 Manufacturing Date And Time (Hex) Byte 78 CA Board Manufacturer Name type/length Byte 79 43 M Board Manufacturer Name Byte 80 26 P Board Manufacturer Name Byte 81 44 S Byte 82 20 Board Manufacturer Name Byte 83 20 Board Manufacturer Name Byte 84 20 Board Manufacturer Name Byte 85 20 Board Manufacturer Name Byte 86 20 Board Manufacturer Name Byte 87 20 Board Manufacturer Name Byte 88 20 Board Manufacturer Name Byte 89 E0 Board Product Name type/length Byte 90 42 B Board Product Name Byte 91 55 U Board Product Name Byte 92 4C L Board Product Name Byte 93 4B K Board Product Name Byte 94 20 Byte 95 50 P Board Product Name Byte 96 4F O Board Product Name Byte 97 57 W Board Product Name Byte 98 45 E Board Product Name Byte 99 52 R Board Product Name NULL Notes Start of Check-sum Language Code 10 Bytes long Board Manufacturer Name 32 Bytes long Board Product Name www.murata-ps.com/support 15 Feb 2013 ACAN29.A05 Page 6 of 11 D1U Communications D1U Communications Protocol Application Note Address [0070] [0080] Byte HEX Data ASCII Description Byte 100 20 Byte 101 53 S Byte 102 55 U Board Product Name Byte 103 50 P Board Product Name Byte 104 50 P Board Product Name Byte 105 4C L Board Product Name Byte 106 59 Y Board Product Name Byte 107 20 Board Product Name Byte 108 20 Board Product Name Byte 109 20 Board Product Name Byte 110 20 Board Product Name Byte 111 20 Board Product Name Byte 112 20 Board Product Name Byte 113 20 Board Product Name Byte 114 20 Board Product Name Byte 115 20 Board Product Name Byte 116 20 Board Product Name Byte 117 20 Board Product Name Byte 118 20 Board Product Name Byte 119 20 Board Product Name Byte 120 20 Board Product Name Byte 121 20 Board Product Name Byte 122 D0 Board Serial Number type/length Byte 123 35 5 Board Serial Number (HEX) Byte 124 32 2 Board Serial Number (HEX) Byte 125 43 C Board Serial Number (HEX) Byte 126 54 T Board Serial Number (HEX) Byte 127 48 H Board Serial Number (HEX) Byte 128 30 0 Board Serial Number (HEX) Byte 129 30 0 Board Serial Number (HEX) Byte 130 30 0 Board Serial Number (HEX) Byte 131 30 0 Board Serial Number (HEX) Byte 132 20 Board Serial Number (HEX) Byte 133 20 Board Serial Number (HEX) Byte 134 20 Board Serial Number (HEX) Byte 135 20 Board Serial Number (HEX) Byte 136 20 Board Serial Number (HEX) Byte 137 20 Board Serial Number (HEX) Byte 138 20 Board Serial Number (HEX) Notes Board Product Name Board Product Name 16 Bytes long Input from serial number bar code Input from serial number bar code www.murata-ps.com/support 15 Feb 2013 ACAN29.A05 Page 7 of 11 D1U Communications D1U Communications Protocol Application Note Address [0090] [00A0] Byte HEX Data ASCII Description Notes Board Part Number type/length 11 Bytes long Byte 139 CB Byte 140 30 0 Board Part Number (HEX-ASCII) Byte 141 39 9 Board Part Number (HEX-ASCII) Byte 142 35 5 Board Part Number (HEX-ASCII) Byte 143 37 7 Board Part Number (HEX-ASCII) Byte 144 2D - Board Part Number (HEX-ASCII) Byte 145 32 2 Board Part Number (HEX-ASCII) Byte 146 31 1 Board Part Number (HEX-ASCII) Byte 147 34 4 Board Part Number (HEX-ASCII) Byte 148 30 0 Board Part Number (HEX-ASCII) Byte 149 20 Board Part Number (HEX-ASCII) Byte 150 20 Board Part Number (HEX-ASCII) Byte 151 41 FRU File ID type/length Byte 152 10 FRU File ID Byte 153 C8 Board Revision type/length Byte 154 58 X Board Revision (HEX-ASCII) Byte 155 31 1 Board Revision (HEX-ASCII) Byte 156 20 Board Revision (HEX-ASCII) Byte 157 20 Board Revision (HEX-ASCII) Byte 158 20 Board Revision (HEX-ASCII) Byte 159 20 Board Revision (HEX-ASCII) Byte 160 20 Board Revision (HEX-ASCII) Byte 161 20 Board Revision (HEX-ASCII) Byte 162 C4 Engineering Date Code type/length Byte 163 34 4 Engineering Date Code (HEX-ASCII) Byte 164 33 3 Engineering Date Code (HEX-ASCII) Byte 165 32 2 Engineering Date Code (HEX-ASCII) Byte 166 34 4 Engineering Date Code (HEX-ASCII) Byte 167 C2 Byte 168 41 A Board Artwork Revision (HEX-ASCII) Byte 169 31 1 Board Artwork Revision (HEX-ASCII) Byte 170 10 Byte 171 0 NULL FRU-Specific Information Byte 172 0 NULL FRU-Specific Information Byte 173 0 NULL FRU-Specific Information Board Artwork Revision type/length FRU-Specific Info type/length 8 Bytes long Input from EDC barcode Input from EDC barcode 2 Bytes long 16 Bytes long www.murata-ps.com/support 15 Feb 2013 ACAN29.A05 Page 8 of 11 D1U Communications D1U Communications Protocol Application Note Address [00B0] Byte HEX Data ASCII Description Notes Byte 174 0 NULL FRU-Specific Information Byte 175 0 NULL FRU-Specific Information Byte 176 0 NULL FRU-Specific Information Byte 177 0 NULL FRU-Specific Information Byte 178 0 NULL FRU-Specific Information Byte 179 0 NULL FRU-Specific Information Byte 180 0 NULL FRU-Specific Information Byte 181 0 NULL FRU-Specific Information Byte 182 0 NULL FRU-Specific Information Byte 183 0 NULL FRU-Specific Information Byte 184 0 NULL FRU-Specific Information Byte 185 0 NULL FRU-Specific Information Byte 186 0 NULL FRU-Specific Information Byte 187 C1 Byte 188 0 NULL Pad With Zeros Byte 189 0 NULL Pad With Zeros Byte 190 0 NULL Pad With Zeros Byte 191 0F Byte 192 0 Byte 193 2 End of list/version Byte 194 18 Record length Byte 195 B1 Record Checksum Byte 196 35 Header Checksum Byte 197 40 Overall capacity (watts) (LSB) Byte 198 6 Overall capacity (watts) (MSB) Byte 199 FF Peak VA LSB Byte 200 FF Peak VA Byte 201 FF Inrush current Byte 202 0 Inrush interval in ms. Byte 203 28 Low end Input voltage range 1 (10mv) LSB Byte 204 23 Low end Input voltage range 1 (10mv) MSB Byte 205 B0 High end Input voltage range 1 (10mv) LSB Byte 206 36 High end Input voltage range 1 (10mv) MSB Byte 207 50 Low end Input voltage range 2 (10mv) LSB C1h indicates no more fields Board Info Checksum NULL Start of Check-sum for multi-record Power Supply Information Record www.murata-ps.com/support 15 Feb 2013 ACAN29.A05 Page 9 of 11 D1U Communications D1U Communications Protocol Application Note Address [00D0] [00E0] [00F0] Byte HEX Data ASCII Description Notes Byte 208 46 Low end Input voltage range 2 (10mv) MSB Byte 209 20 High end Input voltage range 2 (10mv) LSB Byte 210 67 High end Input voltage range 2 (10mv) MSB Byte 211 2F Low end Input frequency range Byte 212 3F High end Input frequency range Byte 213 14 AC Dropout Tolerance (ms) Byte 214 7 Binary Flags Byte 215 0 Peak Wattage Byte 216 0 Peak Wattage LSB Byte 217 3 Combined Voltage Wattage ID Byte 218 40 Combined Wattage LSB Byte 219 6 Combined Wattage MSB Byte 220 0 Predictive fail tachometer lower threshold Byte 221 FF Byte 222 FF Byte 223 FF Byte 224 FF Byte 225 FF Byte 226 FF Byte 227 FF Byte 228 FF Byte 229 FF Byte 230 FF Byte 231 FF Byte 232 FF Byte 233 FF Byte 234 FF Byte 235 FF Byte 236 FF Byte 237 FF Byte 238 FF Byte 239 FF Byte 240 FF Byte 241 FF Byte 242 FF Byte 243 FF Byte 244 FF www.murata-ps.com/support 15 Feb 2013 ACAN29.A05 Page 10 of 11 D1U Communications D1U Communications Protocol Application Note Address Byte HEX Data Byte 245 FF Byte 246 FF Byte 247 FF Byte 248 FF Byte 249 FF Byte 250 FF Byte 251 FF Byte 252 FF Byte 253 FF Byte 254 FF Byte 255 FF ASCII Description Notes [0100] Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/ Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2013 Murata Power Solutions, Inc. www.murata-ps.com/support 15 Feb 2013 ACAN29.A05 Page 11 of 11